Event patterns extracted from top quark-related spectra in proton-proton collisions at 8 TeVSupported by National Natural Science Foundation of China (11575103, 11747319), the Shanxi Provincial Natural Science Foundation (201701D121005), the Fund for Shanxi “1331 Project” Key Subjects Construction and the US DOE (DE-FG02-87ER40331.A008)

Chen, Ya-Hui ( Institute of Theoretical Physics & State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan, Shanxi 030006, China) ; Liu, Fu-Hu ( Institute of Theoretical Physics & State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan, Shanxi 030006, China) ; Lacey, Roy A. ( Departments of Chemistry & Physics, Stony Brook University, Stony Brook, NY 11794, USA)

21 February 2018

Abstract: We analyze the transverse momentum (pT) and rapidity (y) spectra of top quark pairs, hadronic top quarks, and top quarks produced in proton-proton (pp) collisions at center-of-mass energy TeV. For spectra, we use the superposition of the inverse power-law suggested by the QCD (quantum chromodynamics) calculus and the Erlang distribution resulting from a multisource thermal model. For y spectra, we use the two-component Gaussian function resulting from the revised Landau hydrodynamic model. The modelling results are in agreement with the experimental data measured at the detector level, in the fiducial phase-space, and in the full phase-space by the ATLAS Collaboration at the Large Hadron Collider (LHC). Based on the parameter values extracted from pT and y spectra, the event patterns in three-dimensional velocity (βx-βy-βz), momentum (px-py-pz), and rapidity (y1-y2-y) spaces are obtained, and the probability distributions of these components are also obtained.


Published in: Chinese Phys. C 42 (2018) 033101
Published by: Institute of Physics Publishing/Chinese Academy of Sciences
DOI: 10.1088/1674-1137/42/3/033101
arXiv: 1611.10150
License: CC-BY-3.0



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